/*
@Author: urmsone urmsone@163.com
@Date: 2025/1/24 17:38
@Name: cors.go
@Description: CORS 中间件
*/

package middleware

import (
	"github.com/gin-gonic/gin"
)

// CorsHandler CORS 处理中间件
func CorsHandler() gin.HandlerFunc {
	return func(c *gin.Context) {
		method := c.Request.Method
		origin := c.Request.Header.Get("Origin")
		
		if origin != "" {
			c.Header("Access-Control-Allow-Origin", origin)
			c.Header("Access-Control-Allow-Methods", "POST, GET, OPTIONS, PUT, DELETE, UPDATE")
			c.Header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept, Authorization, Token")
			c.Header("Access-Control-Expose-Headers", "Content-Length, Access-Control-Allow-Origin, Access-Control-Allow-Headers, Cache-Control, Content-Language, Content-Type")
			c.Header("Access-Control-Allow-Credentials", "true")
		}

		if method == "OPTIONS" {
			c.AbortWithStatus(204)
			return
		}

		c.Next()
	}
}
